Tube quenching apparatus



J. J. DUNN TUBE QUENCHING APPARATUS:

April 9,4 1940.

Filed April L21,. 19:59

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y Ah/WW' Patented Apr., 9, 1940 UNITED -STATES PATENTeOFFlCE 2,196,960TUBE QUENCHING APPARATUS Jerry Jay Dunn, Ellwood City, Pa., assignor toNational Tube Company, a. corporation of New Jersey Application April21, 1939, Serial No. 269.281

1 Claim.

Such processing of oil well casing involves heating of the casing to aproper temperature and ,o the application oi a quenching iiuid ofdefinite volume applied to the casing over a definite time period,thereby effecting a dellnite drop in tem'- perature and rate of drop. Itis necessary to carry out the quenching operation with uniform- 5 itythroughout the length of the pipe and sirnulm taneously maintain thepipe round and straight.

A specic example of the present invention is illustrated by thefollowing drawing, in which:

Figure 1 is a plan of a part of the apparatus 5G constituting thisexample;

Figure 2 is a vertical longitudinal section of the complete apparatus;and

Figure 3 is a cross section taken` from the line IIIJ-III of Figure 2.

As shown by the drawing, this apparatus is a form or Jig in which thecasing I is placed, the jig being in two halves 2 and 3. Aquenchingfluid distributing trough 4 extends the whole length of the topof the iig, the numeral 5 schematically illustrating a quenching-uuidcontainer arranged to discharge a predetermined quantity o! the fluidinto the distributing trough l.

The two halves of the jig cooperatively provide a plurality oi.'inwardly extending radial ribs or (Cl. 26S-6) parts 6, these beingadapted to engage the casing when the jig is closed about the same andpositively hold the casing against change in its contour. It iste beunderstood that the two halves of the jig are provided with suitablemeans, 5 not shown, for clamping them together about the casing, wherebyto render operative the ribs or parts 6. l

A plurality of quenching-fluid inlets 'l open from the trough 6 into thevarious annular spaces w between the annuar parts E, and a plurality ofoutlets 8 in the bottom ci' the jig open from these just mentionedspaces, whereby iiuid dumped into the trough ai by the container 5'practically simultaneously encircles the casing 15 throughout itslength. To enable variation in the quenching period. plates Q and i0provide a means for regulating the exit of the quenching fluid from theoutlets t. Thus is retained the quenching-fluid in the various spacesbetween the 2c annular ribs for the necessary length of time.

I claim:

Apparatus for quenching tubes, comprising a form adapted to be 'closedabout the tube and having a plurality of longitudinally spaced an- 25nular parts extending inwardly to engage and hold the tube, said formhaving a plurality of inlets in its top for the spaces between saidparts and a plurality of outlets in its bottom for said spaces, saidinlets connecting with a trough ex- 30 tending the length of said formand said outlets having means for regulating the exit of said mediumtherethrough.

. JERRY JAY DUNN.

